PMID- 34244238 OWN - NLM STAT- MEDLINE DCOM- 20211221 LR - 20240214 IS - 1939-327X (Electronic) IS - 0012-1797 (Print) IS - 0012-1797 (Linking) VI - 70 IP - 10 DP - 2021 Oct TI - Insulin Resistance in Skeletal Muscle Selectively Protects the Heart in Response to Metabolic Stress. PG - 2333-2343 LID - 10.2337/db20-1212 [doi] AB - Obesity and type 2 diabetes mellitus (T2DM) are the leading causes of cardiovascular morbidity and mortality. Although insulin resistance is believed to underlie these disorders, anecdotal evidence contradicts this common belief. Accordingly, obese patients with cardiovascular disease have better prognoses relative to leaner patients with the same diagnoses, whereas treatment of T2DM patients with thiazolidinedione, one of the popular insulin-sensitizer drugs, significantly increases the risk of heart failure. Using mice with skeletal musclespecific ablation of the insulin receptor gene (MIRKO), we addressed this paradox by demonstrating that insulin signaling in skeletal muscles specifically mediated cross talk with the heart, but not other metabolic tissues, to prevent cardiac dysfunction in response to metabolic stress. Despite severe hyperinsulinemia and aggregating obesity, MIRKO mice were protected from myocardial insulin resistance, mitochondrial dysfunction, and metabolic reprogramming in response to diet-induced obesity. Consequently, the MIRKO mice were also protected from myocardial inflammation, cardiomyopathy, and left ventricle dysfunction. Together, our findings suggest that insulin resistance in skeletal muscle functions as a double-edged sword in metabolic diseases. CI - (c) 2021 by the American Diabetes Association. FAU - Jia, Dandan AU - Jia D AD - Institute of Sports and Exercise Biology, School of Physical Education, Shaanxi Normal University, Xi'an, Shaanxi, China. AD - Department of Pharmacology, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX. FAU - Zhang, Jun AU - Zhang J AD - Department of Pharmacology, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX. FAU - Liu, Xueling AU - Liu X AD - Department of Pharmacology, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX. FAU - Andersen, John-Paul AU - Andersen JP AD - Department of Pharmacology, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX. FAU - Tian, Zhenjun AU - Tian Z AD - Institute of Sports and Exercise Biology, School of Physical Education, Shaanxi Normal University, Xi'an, Shaanxi, China. FAU - Nie, Jia AU - Nie J AD - Department of Pharmacology, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX. FAU - Shi, Yuguang AU - Shi Y AUID- ORCID: 0000-0002-9979-5661 AD - Department of Pharmacology, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX shiy4@uthscsa.edu. LA - eng SI - figshare/10.2337/figshare.14903118 GR - P30 CA054174/CA/NCI NIH HHS/United States GR - R01 AG055747/AG/NIA NIH HHS/United States GR - S10 OD021805/OD/NIH HHS/United States GR - T32 GM108563/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20210708 PL - United States TA - Diabetes JT - Diabetes JID - 0372763 RN - 0 (Insulin) RN - EC 2.7.10.1 (Receptor, Insulin) SB - IM MH - Animals MH - Cytoprotection/genetics MH - Diet, High-Fat MH - Glucose Intolerance/genetics/metabolism/pathology MH - Heart/physiology MH - Heart Diseases/genetics/metabolism/pathology/*prevention & control MH - Hyperinsulinism/genetics/metabolism/pathology MH - Insulin/metabolism MH - Insulin Resistance/genetics/*physiology MH - Male MH - Metabolic Diseases/genetics/metabolism/pathology/physiopathology MH - Mice MH - Mice, Knockout MH - Muscle, Skeletal/*metabolism MH - Myocardium/*metabolism/pathology MH - Obesity/etiology/metabolism/physiopathology MH - Organ Specificity/genetics MH - Receptor, Insulin/genetics/metabolism MH - Signal Transduction/genetics MH - Stress, Physiological/genetics/*physiology PMC - PMC8576508 EDAT- 2021/07/11 06:00 MHDA- 2021/12/22 06:00 PMCR- 2022/10/01 CRDT- 2021/07/10 05:40 PHST- 2020/11/30 00:00 [received] PHST- 2021/07/02 00:00 [accepted] PHST- 2021/07/11 06:00 [pubmed] PHST- 2021/12/22 06:00 [medline] PHST- 2021/07/10 05:40 [entrez] PHST- 2022/10/01 00:00 [pmc-release] AID - db20-1212 [pii] AID - 201212 [pii] AID - 10.2337/db20-1212 [doi] PST - ppublish SO - Diabetes. 2021 Oct;70(10):2333-2343. doi: 10.2337/db20-1212. Epub 2021 Jul 8.